The barter problem — Trading Post · Demand & Supply
Pip has three fish and wants a warm hat. Olo the hatmaker loves hats but does not like fish at all. Demand & Supply · MyLeoNes.
Your task
Help Pip get the hat without forcing anyone.
- Barter needs a double match: each person must want what the other has.
- Invented stories to learn from. Prices and shops in them are made up, and this is not financial advice. Ask a trusted adult before buying or selling anything for real.
- Never share personal or payment details online. Nothing about you is collected.
Score
- Understanding trade — You understood how this part of trade works.
- Wise choices — You weighed your options before choosing.
- Fair play — You treated buyers and sellers fairly.
In real life
The need for a double match is the main reason barter is hard in big communities.
Trading Post
Invented stories to learn from, not financial advice. Before buying or selling anything for real, ask a trusted adult. Nothing about you is collected; progress stays on this device.
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